1. Articles from revespcardiol.org

  2. 1-14 of 14
    1. Influence of neoatherosclerosis on prognosis and treatment response in patients with in-stent restenosis

      Influence of neoatherosclerosis on prognosis and treatment response in patients with in-stent restenosis

      Introduction and objectives Neoatherosclerosis is one of the causes of in-stent restenosis (ISR). Our objective was to evaluate the influence of neoatherosclerosis on prognosis and treatment response in patients with ISR. Methods This is a pooled analysis of the optical coherence tomography (OCT)-substudies of 2 multicenter, randomized clinical trials, RIBS IV and V, comparing treatment with paclitaxel-coated balloon vs everolimus-eluting stent in patients with ISR. OCT evaluation was performed at baseline and at 6 to 9 months. Neoatherosclerosis was defined in baseline OCT as neointima with calcified or lipid content. We evaluated the angiographic and OCT results at 6 ...

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    2. Optical Coherence Tomography During Vasospasm Testing | Revista Española de Cardiología (English Edition)

      Optical Coherence Tomography During Vasospasm Testing | Revista Española de Cardiología (English Edition)

      A 72-year-old woman with stable angina was referred for coronary angiography. The patient had been treated for several years with low doses of aspirin and diltiazem for suspected coronary vasospasm, with poor symptom control in the last months. Coronary angiography did not detect significant lesions ( Figure ). Evaluation of the right coronary artery by optical coherence tomography (OCT) ruled out significant artery wall disease ( Figure ). A coronary vasospasm test with intracoronary ergonovine was strongly positive ( Figure ). Optical coherence tomography during induced vasospasm revealed a significant increase in artery media thickness (X) relative to the baseline study (the asterisk marks a guide ...

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      Mentions: Fernando Alfonso
    3. Vascular Healing Evaluated by Intravascular Ultrasound and Optical Coherence Tomography | Revista Española de Cardiología (English Edition)

      Vascular Healing Evaluated by Intravascular Ultrasound and Optical Coherence Tomography | Revista Española de Cardiología (English Edition)

      A 34-year-old man with ST-segment elevation myocardial infarction was referred to our department for primary angioplasty. A coronary angiogram revealed thrombotic occlusion of the ostial left anterior descending artery, with protrusion of abundant thrombotic material into the left main coronary artery. After ineffective thromboaspiration, dilatation with a 2.0 mm × 15 mm balloon was performed and blood flow was restored, although a large thrombus remained ( Figure , red arrows). Intravascular ultrasound demonstrated the presence of an insignificant fissured plaque ( Figure , blue arrows), with abundant attached thrombotic material ( Figure , red arrows). We considered implanting a drug-eluting stent that would reach the left ...

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    4. Optical Coherence Tomography to Optimize Stent Deployment: Seeing is Believing

      Optical Coherence Tomography to Optimize Stent Deployment: Seeing is Believing

      Optimal coherence tomography (OCT) is a new light-based intracoronary imaging modality with unprecedented spatial resolution.1,2 Currently, its axial resolution is only 15 mm, that is, 10 times higher than that of more classical techniques such as intravascular ultrasound (IVUS) based on ultrasounds (150 mm). Optimal coherence tomography therefore provides extremely high-quality images of the coronary wall, especially of the structures closest to the vessel lumen.1,2 Moreover, numerous studies with histological validation have confirmed its ability to adequately differentiate the distinct types of atheromatous plaque, including fibrous plaques (homogeneous, signal-rich regions), lipid plaque (progressively signal-poor regions) and ...

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      Mentions: Fernando Alfonso
    5. Microchannels in Recent Chronic Total Occlusions Assessed With Frequency-Domain Optical Coherence Tomography

      Microchannels in Recent Chronic Total Occlusions Assessed With Frequency-Domain Optical Coherence Tomography

      A 45-year-old, male, previous smoker was admitted for exertional stable angina pectoris that had started 8 months before, with Tc-99m-single photon emission computed tomography evidence of partially reversible inferior ischemia. The patient underwent coronary angiography, which revealed a total occlusion in the proximal segment of the right coronary artery, with collateral circulation from septal branches of the left anterior descending. The occlusion could be easily crossed using a tapered Fielder XT W wire supported by an over-the-wire 2 mm balloon. The dilatation restored sufficient flow to allow an optical coherence tomography (OCT) examination performed with a DragonFlyTM catheter and C7 ...

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    6. Intrastent Coronary Dissection Assessed With Optical Coherence Tomography

      Intrastent  Coronary Dissection Assessed With Optical Coherence Tomography
      An 83-year-old man with acute myocardial infarction in 1998 was treated with a percutaneous coronary procedure, in which a 3.5 _ 25- mm Nir Royal stent (Boston Scientific) was implanted in the proximal segment of the left anterior descending artery. He was admitted to our hospital for chest pain and acute pulmonary edema.
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    7. Simple versus complex approaches to treating coronary bifurcation lesions: direct assessment of stent strut apposition by optical coherence tomography.

      Simple versus complex approaches to treating coronary bifurcation lesions: direct assessment of stent strut apposition by optical coherence tomography.
      Introduction and objectives. Stenting of coronary bifurcation lesions carries an increased risk of stent deformation and malapposition. Anatomical and pathological observations indicate that the high stent thrombosis rate in bifurcations is due to malapposition of stent struts. Methods. Strut apposition was assessed with optical coherence tomography (OCT) in bifurcation lesions treated either using the simple technique of stent implantation in the main vessel only or a complex technique (i.e. Culotte’s). A strut was regarded as malapposed if the gap between its endoluminal surface and the vessel wall was greater than its thickness plus an OCT resolution error margin ...
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    8. Optical Coherence Tomography: Its Value in Intravascular Diagnosis Today

      Optical Coherence Tomography: Its Value in Intravascular Diagnosis Today
      Optical coherence tomography is a recently developed high-resolution intravascular diagnostic technique. Initially, it was mainly used for characterizing atherosclerotic plaque because it served a number of functions, from identifying plaque with high lipid content to detecting macrophage accumulation, both of which are associated with plaque instability. Currently, there is growing interest in the value of optical coherence tomography in the area of coronary intervention, where the technique offers significant advantages over more widespread intravascular diagnostic techniques such as intravascular ultrasound: its higher resolution means that the vessel lumen diameter can be measured more precisely, periprocedural complications such microdissection of the ...
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    9. Optical Coherence Tomography. Ancient Topics, Modern Perspectives

      Optical Coherence Tomography. Ancient Topics, Modern Perspectives
      Optical coherence tomography (OCT) is an intracoronary diagnostic technique recently applied in clinical practice that provides high-quality, highresolution (10-20 μm, compared to 80-120 μm with intracoronary ultrasound) cross-sectional images of the vessels. This technique provides valuable information on the characterization of plaques, the mechanisms implicated in thrombosis or restenosis of coronary stents, and relevant information to optimize the results of coronary interventional procedures. One of the
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    10. Coronary Artery Dissection Assessed by Optical Coherence Tomography

      Coronary Artery Dissection Assessed by Optical Coherence Tomography
      Optical coherence tomography (OCT) is a recently introduced intracoronary diagnostic technique, based on the capturing of images through the analysis of the variation in the reflection of a near-infrared light beam, according to the characteristics of the vascular tissue on which it falls and its subsequent computerised reconstruction. It obtains images with a resolution of 10-20 μm, much superior to that of intracoronary ultrasounds (100-120 μm). Its incipient introduction in the haemodynamics services allows for comprehensive diagnosis of the different diseases that affect the vascular tree structure. It is currently employed in the evaluation of results after percutaneous coronary intervention ...
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      Mentions: Abbot
    11. Optical Coherence Tomography After Rotational Atherectomy

      Optical Coherence Tomography After Rotational Atherectomy
      The percutaneous coronary intervention (PCI) in calcified lesions is a challenge for the intervening cardiologist and quite often the need for devices to modify the plaque, such as rotational atherectomy (RA), to achieve appropriate expansion and apposition of the stents.1 The optical coherence tomography (OCT) is a new high resolution intracoronary diagnostic technique that has proven useful in the study of atherosclerotic lesions2 as well as during the PCI3,4 and in the evaluation of the neointimal stent coverage.5 The OCT findings are described in a patient with a calcified lesion treated with RA and drug eluting
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    1-14 of 14
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